Projecting system for wooden or metallic coiling curtains of any model



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July 6, 1943. A. LOMBARDI ETAL PROJECTING SYSTEM- FOR WOODEN OR METALL COILING CURTAINS OF ANY MODEL. Filed July 26, 1940 v 2 |f l1 1 i y 1943- A. LOMBARDI ETAL 2,323,612 PROJECTING SYSTEM FOR WOODEN QR METALLIC COILING CURTAINS OF ANY MODEL Filed July 26, 1940 4 Sheets-Sheet 2 #0 r N .M o 0?. m2 Z f lw ww a 5 M #5 a y 1943- A. LOMBARDI ETAL. 2,323,512 PROJECTING SYSTEM FOR WOODEN OR METALLIC COILING CURTAINS OF ANY MODEL Filed July 26, 1940 4 Sheets-Sheet 3 Im I flZZerZ'o Lomlardi 1 flllerfo 5a and/re Jam 15. aponaro 17- M 9L attomegs.

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Patented July 6, 1943 PROJ ECTIN G SYSTEM FOR WOODEN OR METALLIC COILING CURTAmS OF ANY MODEL Alberto Lombardi, Alberto Saponare, and Juan Rafael Saponaro, Montevideo, Uruguay Application July 26, 1940, Serial No. 347,624

3 Claims.

The present invention refers to wooden or metallic coiling curtains and its object is to provide a projecting system for such curtain and to avoid disadvantages and inconveniences which so far have occurred with such curtains.

Further objects of our invention will be seen from the following specification, the attached claims and the accompanying drawings. One of these objects is to make the device operate automatically and to provide control of the entire mechanism by the band which coils or uncoils the curtain.

The device is provided with guides in which the curtain is slidable, said guides being swingably mounted on an upper horizontal shaft, whereby the curtain can be used either as a blind or as an awning.

The band which coils or uncoils the curtain is the only element necessary for control of the system, and the device changing the blind into an awning operates automatically, whereby not only the procedure is simplified, but also the effort required is reduced to a minimum and the possibility of accidents is avoided, for example the possibility of closing at the wrong time. This is due to the fact that the awning is kept open by its own weight.

The entire device consists of elements of the utmost mechanical simplicity whereby expensive repairs are unnecessary. A further advantage is that the device can be completely dismounted in a few seconds, a fact which allows a constant and thorough maintenance and, at the same time, facilitates the replacement of any element that might have been deformed or that might require repair. In addition, such flaws can not easily occur in the present device.

The exterior and interior appearance of the curtain provided with this invention does not differ from the original appearance, and the installation of the device does not require a larger space. Therefore, the aesthetic appearance remain unchanged while advantages regarding convenience and handling as well as stress-proofness are obtained.

In short, the device of the present invention is a mechanism for control and for simultaneous and automatic operation and is quite different from existing devices for coiling curtains.

In order to explain the subject of the invention, the accompanying drawings show an embodiment thereof, which serves as an illustrative example. In the drawings:

Figure 1 is a front elevational view of the entire structure.

Figure 2 is a vertical side view in which the curtain and the guides are represented in two essential positions, 1. e. in closed position and open as an awning.

Figure 3 is a sectional front view showing the details of the suspension of the guides and the upper shaft.

Figure 4 is a sectional side view of Figure 3.

Figure 5 is a sectional side View showing the details of the locking trigger of the guide, said trigger securing the guide so that the curtain operates as an ordinary blind.

Figure 6 is a front view of Figure 5.

Figure 7 is a side view showing how the guide and the thrusting arm are assembled and showing the thrusting stop and the hooking wedge in a position in which the device acts as an ordinary blind.

Figure 8 is a front view of Figure 7.

Figure 9 is a rear view of Figure 7.

Figure 10 is a side view showing the hooking of the thrusting arm, which changes the blind into an awning.

Figure 11 is a side View showing the mechanism of the thrust arms at their initial movement of function.

Figure 12 is a side view showing the thrusting arm return to rest.

In all the attached drawings the reference numbers indicate the same component parts in each one.

Referring to the drawings, the device comprises a curtain formed by a number of slats l connected to each other by flexible members 2 which are attached to a rotatable drum 3 by the fastening members 4. The drum is rotated by the tape 5 which winds on a pulley 6 provided with circular end plates 1. The tape on being pulled by hand, in a downward direction imparts a rotary motion to the drum which in turn upwinds the tape and the curtain is lifted. Inversely on disengaging tape and letting same run loosely the curtain falls by gravity to the down position.

The tape on being wound and/or unwound, according to the alternate cycles, is picked up on the spool 8 by spring action enclosed in same and the reaction produces a deformation of spring which allows the tape to unwind itself thus allowing the curtain to descend. The tape is held to the pulley 6 by the provision of guides 9 and the spool 8 by the conducting and locking members ID.

The aforegoing, on general lines, describes the component parts of the cur-tain itself, they are the slats, transmission, propulsion and locking gear for lowering, raising the curtain or looking it in any position. With respect to the extension or projection of curtain, the invention comprises guide members H of channel way construction placed bi-laterally and adjacent to the extreme ends of the slats in which operates the displacement of the curtain Each of the extending guides II is to be arranged so that the extreme ends allow free rotary movement to an axle |2 coupled to a bearing l3 held conveniently at the side M to form an integral part of the slot in which the curtain works. The extreme lower portion l5 of the guides terminate in a trigger l6 (Figs. 1, 2, 5 and 6) each end being connected together by a member of the channel way extension piece which is secured to the elements l5 thus forming a solid and integral part of the frame which supports the counter weights I5a.

The trigger l6 which controls the locking device is supplemented by a spring band l8 which operates the elements l6 and [8 in the radius of action of its incidence which is developed on a spherical cone 2|). This is secured to. the lower end of the push rod levers 2| each of which is secured in turn to the push rods 2| and fixed to the end of the swivel axle 22 supported by the bearings 23, both levers being assembled to axle 22. (See Figures 1, 2, 5 and 6.)

Levers 2|, projecting in the lift position of axle base 22 between the guides and the part of the slot (Figure 2) are connected at the top end by a terminal member 24. This terminal is supported to the extreme outer side face of the extension guide. The anchor plate 25 of the push rod 2| is made in two flat projections 26 and? in which is placed the stop piece secured to the guide II. This stop piece acts in conjunction with projections 26 and 21 of the anchor plate 25 and permits the detention of the push rod 2| in guide This is facilitated by the special form of the elements 26-41-423 clearly specified in Figures 7 and 9.

The terminal member is supplemented by a second plate secured to it, which plate 29 carries a small tongue 30 which acts on the push rods 2| in the projection of the frame. This tongue is Worked by the engaging member 3| secured at the lower end of the curtain slats. It moves with the slats in the inside of the extension grooves, either in the raising or lowering position as shown in Figures 11 and 12, and when the member is not engaging the tongue it falls into cavity Ha, shown in Figure 10.

The engaging member 3| projects into a flat stop 32 the function of which to free the trigger I6. This allows stop 32 to push stop 33 fixed to guides, which results in the displacement of the guides II in the raising condition. This displacement occurs through an equal movement of the supporting axles l2 in th slot 34 and limits the raising action by stop 35 coming in contact with stop l3.

The functions of the system proceeds in the following manner. Taking for example the position of the curtains in the down position and thus covering the opening, then the guides render the trigger |6 inoperative and the push rods become locked by stop 28 being inserted between projections 26 and 2'! of terminal 24. This position is shown in Figures 1, 2, 7, 8, 9. If it is desired to raise the curtain it is only necessary to pull the tape 5 in a downward direction which in effect unwinds itself from the spool B and automatically winds itself on spool 8. This action sets in motion drum 3 which winds up the curtain to a raised position. The curtain comes to rest when contact is made between stops 33 and 32.

If it is desired to use curtains without the projecting extension it is sufficient to reverse the operation above cited and the curtain falls by gravity and the tape automatically winds itself on spool 8.

If it is desired to use the projecting extensions the same proceedings as above described are carried out with the exception that when stops 32 and 33 come into contact a further sharp pull on the tape is required in order to lift these stops to a slightly higher position, which has the effect of displacing axle supports |2 in slots 34 of bearings 3 which will impact a vertical movement to the lower extremity l5 of the guides II. This movement will release trigger I6 and simultaneously spring l8 will become compressed and tighten on the spherical cone 2!]. The compression of this spring sets up a reaction which allows it to slip round the periphery of the cone and isolating the trigger from the radius of action, thus freeing the guides and allowing them to take up movement in the vertical plane. In consequence of this rise, stop 28 is displaced and ceases to function in incidence with projections and 2? and plates 25 of the terminal member 24 of the push rods 2| Figure '7 whilst the separation from the vertical movement of H produces an action in spring l8 and elements 20 which releases stop 24. Releasing tension on tape stop 32 ceases to exert pressure on stop 33 this allowing the guides to fall by gravity until such time as trigger i withdrawn from slot of incidence i9, thus allowing it to slip round the curvature of cone 28 causing the angular displacement of guide I; at the same time stop 28 being released from its engaged position descends to form contact with the under edge of 28, of the projection 25 of anchor plate 25 which owing to its special form contributes to the angular displacement of guides II and releasing push rod 2|. This displacement and release alters the position of plates 29 of member 24 which reverts from a non-operative position, as shown in Figure 10, to an operative position shown in Figure 11, allowing the tongue 30 to fall into the cavity.

If the curtain is now lowered, the slats slip through the channel ways of guide until they arrive at cavity Ila, and the member 3| comes into contact with the tongue and carries it in a downward direction resulting in the angular displacem nt of the push rod 2|, swivelling on axle 22, giving rise to a rocking movement of guides l which, turning on axle supports, arrive at their positional limit shown in dotted lines in Figure 2 and corresponding to th s full down position of the curtains. It is interesting to note that the engaging member 3| and the tongue 30 act in a way which is made clear on reference to Figure 11.

To operate the closing of the frame it is suffucient to raise the curtain to such an extent that engaging member 3| comes in contact with tongue 30 and displaces it in the raising condition.

If when raising the curtain this is effected in a hurried manner it causes the balance arm to close suddenly through kinetic energy.

When the slats are passing through the guides the engaging member releases the tongue, whilst the lower part I5, by virtue of the energy accumulated through movement, strikes component 30, causing the trigger to slip over contour of same, at the same time causing wing I8 to ride over the lower face of 20 (twenty) and deform the spring. When the trigger comes in line with the slot of incidence it engages with same by spring action Simultaneously the stop 28, coming in contact with the projection of plate 25 of the terminal member 24 it assists in slightly raising guides H which precede the retarding action and finally, between 21 and 26, holds the terminal member 24 and the push rod 2|. In the holding position of the terminal member 24, the tongue 30 remains in this cavity Ila, of guide II, Figures 7 to 10, and so it is not able to engagewith member 3|, as shown in Figure 10, and the whole remains in an inactive condition, being able, therefore, to operate the curtain in the ordinary way. It is desired to alter the position of the projecting extension it is necessary only to restart the cycle of operations as above described.

From the aforesaid and by reference to the attached drawings the advantages of this system become self evident and the opening, closing and the adjusting of the extending projector can be efiectecl by the simple and sole use of a tape, and practically obviate the intervention of an operator.

What is claimed is:

1. A device for coiling curtains comprising a support, substantially vertical guides pivoted adjacent theirupper ends to the support for swinging movement, locking mechanism carried by the support to engage the guides and hold them in their normal substantially vertical position, a curtain slidably disposed within said guides, means to raise and lower said curtain within the guides, means carried by the curtain to engage the guides and raise them vertically out of engagement with the locking mechanism, and a thrust member connecting one of the guide elements with the support member. said thrust member pivotally engaging one of said guide elements and slidably engaging the other guide element to be actuated by said vertical movement of the guides to swing the guides about their pivots.

2. A device of the character described com- 7 curtain adjacent its lower end and adapted to engage the abutments on the guides and raise the guides vertically out of engagement with f said locking mechanism, and a thrust member connecting one of the guide elements with one of the support elements, said thrust element pivotally engaging one of said elements and slidably engaging the other element to be actuated by the vertical movement of the guides to swing the guides about their pivots.

3. A device for coiling curtains comprising a support, substantially vertical guide members pivoted adjacent their upper ends to the support for swinging movement, locking mechanism carried by the support to engage the guides and hold them in their normal substantially vertical position, a curtain slidably disposed within said guides, means carried by the curtain to engage the guides and raise them vertically out of engagement with the locking mechanism, and a thrust member connecting one of the guide members with the support member, said thrust member pivotally engaging one of said members and slidably engaging the other member to be actuated by said vertical movement of the guides to swing the guides about their pivots, said thrust member having a cam adjacent one end thereof, one of said guides having a curved spring member engaging the cam in the closed position of the guides, said spring member cooperating with the cam to cause an initial outward movement of the guides when the guides are released by the locking mechanism.

ALBERTO LOMBARDI. ALBERTO SAPONARE. JUAN RAFAEL SAPONARO. 

